erythrocyte sedimentation rate (ESR), the rate at which red blood cells settle out in a tube of unclotted blood, expressed in millimeters per hour. Blood is collected in an anticoagulant and allowed to form a sediment in a calibrated glass column.
The Butterfly Circus (2009) The Butterfly Circus is the story of a renowned circus troupe traveling through the devastated American landscape at the height of the Great Depression, lifting the spirits of audiences ... See full summary Â».
Butterflies and Moths. Butterflies are the dancers of the insect world. They flit, they flutter, and they have the most beautifully colored costumes! More than 12,000 species of butterflies and moths live on. Butterflies and Moths. Posted in Animals , Insects , Metamorphosis | Tags : All About Butterflies and Moths, butterfly, butterfly and moth facts, difference between butterfies and moths, facts about butterflies and moths for kids, insects, moth, types of flying insects, winged insects.